Stage three of the upgrade - the biggest the airport has witnessed in more than 40 years has included the relocation and opening of a house to serve as the new terminal building.

The enabling of a non-precision approach to landing is also a major achievement for the regional airport.

A non-precision approach is an instrument approach and landing which utilises lateral guidance.

It enables test flights to take place at the air strip and additional flight paths to be created.

The approach also allows for the measurement of the height of a plane at how many kilometres out and ensure a safe take off and landing. Its introduction has enabled the Air Ambulance to land.

There has also been an extension to the Aircraft Hangar as well as renovations to toilets, upgrades to power and sewage, lighting, utility works, access road, patching of some taxiway areas and resealing of a secondary runway.

Northern Grampians Shire Mayor, Cr Kevin Erwin said the majority of the renovations were now completed with some sealing works all that remains.

He said council has now applied to the state government for grants to install a refuelling area and more fencing. Council has also applied to the fFderal Government to increase the water storage at the bomber base.

"We know that during a fire sometimes our air crews can be limited and we are forced to rely on ground crews because there just isn't enough water," he said.

"We also recognise there is a need for fuel so we have applied for funding that would enable 24/7 refuelling that could be be paid for in the form of a swipe card system."

Cr Erwin said completion of the redevelopment will put the town in good stead.

"For a regional airport we will become very modern, the fly-in fly-out has been a bit quieter due to a downturn in mining.

"Once that picks-up we should be in a pretty good position," he said.